.page-faq {
  --faq-rail-w: 188px;
  padding-bottom: clamp(64px, 9vw, 120px);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 首屏：杂志封面式 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--gap);
  padding: clamp(28px, 5vw, 56px) 0 clamp(32px, 4vw, 48px);
  border-bottom: var(--line);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: end;
    gap: 48px;
  }
}

.page-faq .faq-hero-main {
  min-width: 0;
}

.page-faq h1 {
  margin: 18px 0 0;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 72px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 15em;
}

.page-faq .faq-lede {
  margin: 22px 0 0;
  max-width: 34em;
  color: var(--text);
  font-size: 17px;
  line-height: 1.75;
}

.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: var(--line);
}

.page-faq .faq-facts .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink);
}

.page-faq .faq-facts .stat-value {
  font-family: var(--mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  letter-spacing: -0.01em;
}

.page-faq .faq-facts .stat-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-index-block {
  padding-top: clamp(36px, 5vw, 64px);
}

.page-faq .section-head {
  margin-bottom: 20px;
}

.page-faq .faq-index {
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: var(--line);
}

@media (min-width: 720px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-faq .faq-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 156px;
  padding: 20px 18px 22px;
  background: var(--ink);
  border-top: 2px solid transparent;
  color: var(--text);
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-card:hover,
.page-faq .faq-card:focus-visible {
  background: var(--den);
  border-top-color: var(--cyan);
  color: var(--mist);
}

.page-faq .faq-card-no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-card-name {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-card-desc {
  margin-top: auto;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 左侧刻度 + 右侧问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
  margin-top: clamp(40px, 5vw, 72px);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
  }
}

.page-faq .faq-rail-title {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail-list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail-list li {
  flex: 0 0 auto;
}

.page-faq .faq-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 10px 14px;
  border-bottom: 2px solid var(--grid);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.3;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-rail-list a .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--cyan);
  background: var(--den);
}

@media (min-width: 1000px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-rail-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-list a {
    border-bottom: 0;
    border-left: 2px solid var(--grid);
    white-space: normal;
    padding: 11px 12px 11px 14px;
  }

  .page-faq .faq-rail-list a:hover,
  .page-faq .faq-rail-list a:focus-visible {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }
}

.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 120px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(48px, 6vw, 76px);
  padding-top: clamp(32px, 4vw, 48px);
  border-top: var(--line);
}

.page-faq .faq-group-lede {
  margin: 0 0 24px;
  max-width: 40em;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 28px;
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  border-top: var(--line);
}

.page-faq .qa {
  border-bottom: var(--line);
  transition: background 0.2s var(--ease);
}

.page-faq .qa[open] {
  background: var(--den);
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 19px 16px 19px 18px;
  border-left: 2px solid transparent;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--mist);
  border-left-color: var(--cyan);
}

.page-faq .qa[open] > summary {
  border-left-color: var(--cyan);
}

.page-faq .qa-q {
  min-width: 0;
}

.page-faq .qa-mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .qa-mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa-mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .qa[open] .qa-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 20px 26px 20px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .qa-a p {
  margin: 0 0 12px;
  max-width: 38em;
}

.page-faq .qa-a p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa-a a:hover {
  color: var(--mist);
}

.page-faq .qa-steps {
  counter-reset: step;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .qa-steps li {
  counter-increment: step;
  position: relative;
  margin-left: 36px;
  padding: 0 0 14px 18px;
  border-left: 1px solid var(--grid);
}

.page-faq .qa-steps li:last-child {
  padding-bottom: 4px;
}

.page-faq .qa-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: -36px;
  top: 2px;
  width: 26px;
  text-align: right;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

/* ---------- 尾部 ---------- */
.page-faq .faq-help {
  margin-top: clamp(56px, 7vw, 96px);
  padding: clamp(24px, 3vw, 36px);
}

.page-faq .faq-help h2 {
  margin: 12px 0 12px;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
  color: var(--amber-deep);
  letter-spacing: -0.01em;
}

.page-faq .faq-help p {
  margin: 0;
  max-width: 40em;
  color: var(--amber-deep);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .faq-help .eyebrow {
  color: var(--amber-deep);
}

.page-faq .faq-help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-more {
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: 28px;
  border-top: var(--line);
}

.page-faq .faq-more ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: var(--line);
}

.page-faq .faq-more li {
  background: var(--ink);
}

.page-faq .faq-more a {
  display: block;
  padding: 16px 18px;
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  background: var(--den);
  color: var(--mist);
}

@media (min-width: 760px) {
  .page-faq .faq-more ul {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
  }
}